7731 algorithm will warn if current channel has bad interference, but does not
change the channel as it would interrupt data traversing the bridge link. We
advise to run the Channel Optimizer from the Root Bridge occasionally (weekly?), which will flood the link with UDP in both directions on all country code available
channels, and then settle on the best bi-directional throughput one. You should see the same channel chosen after some set of Channo executions. Hopefully, it will
select the same channel repeatedly.